iPhone « Daniele Demichelis

Good environment variable values during iPhone development

Directly from GHUnit, a small note about which environment variables to set while developing for the iPhone.

Environment Variable: Default: Set to:
NSDebugEnabled [...]

iPhone screen dimensions

This picture can be useful to those of you that develop graphics targeted to the iPhone platform. Here you see the dimensions in pixel of an iPhone windows in some of the most common configurations. Click on the image to enlarge it.

Chosing the number of decimal digits when printing a number with iPhone

This is a small snippet, useful whenever you want to convert a floating point number in a string with a fixed number of decimal digits.

NSNumberFormatter *format = [NSNumberFormatter new];
[format setMaximumFractionDigits:1];
NSNumber *aNumber = [[NSNumber alloc ] initWithDouble:54.4235264];
NSString label = [[NSString alloc] initWithFormat:@”The number is %@”, [format stringForObjectValue:aNumber]];
[distance release];
[format release];

Obviously the NSNumberFormatter [...]

iPhone: how to select a UITabBarItem programmatically

I’m working to an iPhone application with a TabBar on the footer area. Among the others there are a “Home” button and an “Account” button. The first allows the user to see a view that gives an overview of the application. The latter shows the view that the user uses to manage his/her account.

If the [...]

Readonly computed properties in Objective-C

How to implement a read-only computed property in [...]

Daniele Demichelis

Good environment variable values during iPhone development

iPhone screen dimensions

Chosing the number of decimal digits when printing a number with iPhone

iPhone: how to select a UITabBarItem programmatically

Readonly computed properties in Objective-C

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